Photographic reproduction apparatus



Nov. 14,1939,

W1 TNBSSELS:

Z5@ y 17W@ J. J. DILKs, JR 2,179,617

PHOTOGRAPHIG REPRODUCTION APPARATUS original Filed June 19, 1955 s sheets-sheet 1 vIi- BY @wg ORNEYS.

Nov. 14, 1939. J. J. DILKS, JR 2,179,617

PHOTOGR'APHIC REPRODUCTION APPARATUS 4 'Original Filed June 19, 1935 9 Sheets-Sheet 2 Jam/5 JDLUUS, Ji;

,225 'ZI-l BY 10 TORNEYS.

Nov. 14, 1939. 1 J, DILKS, JR 2,179,617

l PHOTOGRAPHIC REPRODUCTION APPARATUS Y Original Filed June 19, 1935 9 Sheets-Sheet 5 FIG.

' Nov. 14, 1939. J. J. DILKs, JR i PHOTOGRAPHIC REPRODUCTION APPARATUS original Filed June 19, i955 e Sheng-sheet 44.'

FJG'LZIZ.

IN1/Emol@ James l 1li/Hits,l JK,

Nov. 14, 1939. L l4 DILKS, JR 2,179,617

PHOTOGRAPHIC REP'RODUCTIQN APPARATUS Original Filed June 19, 1935 9 Sheets-Sheet 5 FIG- K WITNESSES: l N VEN TOR:

Nov. 14, 1939. J. J. DILKS, JR 2,179,617

PHOTOGRAPHIC RPRODUCTION APPARATUS Original Filed June 19, 1935 9 Sheets-Sheet 6 Jams Jmf ,Jig BY WITNESSES: IN VEN TOR:

Nov. 14, 1939.

J. J.- DILKS, JR

PHOTOGRAIPHI C REPRODUCTI 0N APPARATUS Origial Filed June 19, 1935 9 Sheets-Sheet 7 W1 TNESSES:

lNVElgToR.- 5y Jamas kIDI/Urs, Ji;

' Y BY TTORNEYS.

.L J, DILKs, JR

PHOTOGRAPHIC REPRODUCTION APPARATUS Nov. 14, 1939. 2,179,617

Original Fil`ed June 19, 1935 9 Sheets-Sheet 8 BY v I TTORNEYS, Y,

9 Sheets-Sheet 9 Y IN1/Hyron- Jzmes Daling OOOO wo J J DILKS, JR

PHOTOGRAPHIC REPRODUCTION APPARATUS Orlglnal Flled June 19, 1935 Nov. 14, 1939.

Patented Nov. 14, 1939 UNITED STATES PnoroGasrmo aEPaoDUc'rroN Armas TUS .lames J. Dilks, Jr., Haddon Heights, N. J.

substituted for abandoned application Serial No. 27,311, June 19, 1935. This application October 20, 1937, Serial No. 170,129 l 4 Claims.

This invention relates to photographic reproduction apparatus; and it has reference more particularly to apparatus for making reproductions of motion picture ribbon illms on disk negs atives from which positives can be printed for use in projectors such as disclosed in a copending application Serial No. 7,562, filed by me on February 21, 1935. The present application is a substitution of a previous application Serial Number 27,311, filed by me on June 19, 1935.

The chief aim of my invention is to make possible the reproduction Aof the pictures of a' motion picture ribbon along a spiral on a circular negative film disk with the pictures arranged in direct contiguity both circumferentially and radially of the disk. This aim I realize in practice, as hereinafter more fully disclosed, through provision of an apparatus embodying means for intermittently progressing a ribbon illm in such manner that its pictures are successively presented bei'ore the lens of a camera, and for concurrently moving the disk negative intermittently in such a way that small areas of its surface aresuccessively presented along a spiral line to the lens receiving the images from the ribbon lm, and with means which, during contemporaneous dwells of said ribbon film and the negative fLlm disk, operate a shutter to uncover the lens.

A further aim of my invention is to provide in connection with apparatus of the kindreferred to, a simple and compact actuating mechanism which can be relied upon to concurrently' actuate progressing means whereby the lnr ribbon and the lm disk are intermittently shifted as above set forth and for actuating the lens vshutter of the camera in properv timed relation with the shifts of said ribbon nlm and said disk.

Other objects and attendant advantages will appear from the following detailed description of the drawings, wherein Fig. I shows, in side elevation, a .photographic reproduction apparatus conveniently embodying the present improvements.

Fig. 1I is a cross section on a larger scale taken as indicated by the arrows '.lI--II in Fig. I, with parts broken out to expose important details which would otherwise be concealed.

Fig. III is a cross section taken as indicated by the arrows III-III in Fig. I.

Fig. IV is a longitudinal section of the camera taken as indicated by the arrows IV-IV in Figs. II, IH and V.

Fig. V is a iragmentarymorizontal section taken as indicated by the arrows V-V in Figs. I, II, III and IV. Y

Fig. VI is a fragmentary transverse sectional view taken as indicated by the arrows VI--VI in Figs. IV and V.

Fig. V11 is a fragmentary bottom plan section of the apparatus taken asv indicated by the arrows 5 VII-VII in Fig. I.

Fig. VIII is a detail sectional view taken as indicated by the arrows VIII-VIH in Fig. III showing the picker means by which a drive disk for the negative lm disk is intermittently ro- 10 tated.

Fig. IX is a view corresponding to Fig. VIII with the parts 0f the picker mechanism in diiferent positions.

Fig. X is a detail tross sectional view taken as 15 indicated by the arrows X--X in Figs. III and IX; and I Fig. XI shows the face view of the drive disk for the negative nlm disk.

Referring first more particularly to Fig. -I -of 20 these illustrations, my novel photographic reproduction apparatus comprises a bed plate I which is supported at a convenient height from the floor by legs'2. Mounted on the bed plate I, near the center, is a camera which is comprehensively 25 designated by the numeral 4, said camera being, generally speaking, of the construction disclosed in my co-pending application, Serial No. 7,560, led on February 21, 1935. Bolted to table I behind the camera 4 is a, forwardly curving 30 upright arm 5, which, at its upper end, carries a spindle 6 for a reel 'I for a motion picture ribbon nlm F, of which the exposures or pictures are to be successively reproduced along a spiral on a. negative iilm disk (Figs. IV, V and 35 VI) within the camera. Pendant. from the table I is an arm 8, which, at its end, carries a spindle 9 for 'a reel I0 that receives the ribbon film F incident to photographing thereof. By suitable feed means II and I2 respectively 40 adjacent the reels I and I0, the ribbon lm Fis unwound at a denite rate from the reel 1 and re-wound upon the reel Il; while the means shown at' I3 is concurrently operative to intermittently move the film through a guide Il for presentation of its pictures successively to an exposure aperture I5 in said guide, the ribbon nlm being directed-into the guide from above. As shown, the guide Il is aligned in advance of the lens holder I6 of the camera I. 'The light for 50`r photographing is supplied by an electric* bulb I1 within a protective casing I8 having a frosted glass light-diffusing front I9, said casing being supported directly ahead of the apertured guide Il for the ribbon film F by an upward prolonbottom 23 of the casing and engages the top of the leg extension 29. The casing I8 can be swung about the leg extension 20 as a center when access to the interior is necessary for bulb replacements, and to afford access to the camera for insertion and removal of the disk negatives. Suitably disposed in a circuit with the light bulb |1 is a rheostat 25 of conventional design having a contact finger 26 with a manipulating knob 21 whereby said linger can be shifted over resistor contacts 28 in controlling the intensity of the light as may be required.

From Figs. lI-VI it will be observed that the camera 4 comprises a rectangular housing frame component 29 which is secured to the table by screws 30, and a complemental rectangular frontal component or door 3| capable of-being swung about a vertical shaft 32 as an axis, said shaft having journal support in upper and lower bearing lugs 33 and 34 projecting laterally and forwardly from the housing component 29. A hook latch 35 pivoted at 36 to the housing component 29 and engaging a stud 31 on the door component 3|, serves as a means to secure the latter in closed position,- see Figs. I, II and V, while forwardly projecting dowel pins 38 on the frame 29 register with correspondingly-allocated apertures 39 in the door component to keep the latter properly aligned. A

As shown in Figs. IV and V, the door component 3| of the camera 4 is recessed on itsinner side, with formation of a chamber 48 to accommodate the negative film disk D and a perimetricilange' 4| tobear light-tightly against a facing 42 of felt or the like'on the contiguous face wall 29a of the housing component 29. The mounting for the film disk D has the form of a circular plate 43 which is secured to a horizontal shaft 44 with journal support at its rear end in a bearing boss 45 centrally of a transverse bar 46 which is secured at opposite ends to the rearward vertical edge anges 41 of the housing component 29 by screws 49. The shaft 44 also has 'journal support in a bearing bushing 49 set into thewall 31a of door component 3| of the camera 4, the forward end of said shaft being rounded as shown to facilitate entry into the bushing incident to closing of the camera. The film disk D it will be noted, has a central hole to engage over the shaft 44, as well as two diametral apertures respectively at opposite sides of the center hole to engage with studs 58 and 5| respectively of different diameters pro'- jecting from the mounting plate 43. As shown in Fig. IV, the mounting plate 43 occupies an opening 52 in the wall 29a housing component 29 with its front face disposed in the plane of the felt facing 42 so that the lm disk D is suitably braced at the back incident to being rotated as later on more fully explained.

Secured to the shaft 44 at the back of the housing component 29 is the hub member 53Y of a metallic drive disk 54 having a series of circular holes 55 spaced along aspiral by a distance corresponding to the width of a rectangular exposure aperture 56 (Fig. IV) in the lens holder I6, the spiral having a pitch equal to the height of said aperture. 'I'he drive disk 54 is intermittently rotated by means of a picker in the form oi' a shouldered stud 51 which has a rounded end (Figs. VIII and IX) of a diameter accurately fitting the circular holes 55 in said disk. The picker stud 51 75. is lodged Within a hollow pin 58 and urged by a plate member 92, a guideway |04 for the tongue 75 spring 68 toward the disk as far as its shoulder will permit, said pin being axially movable in the boss 6| of a slide 62 confined to reciprocation transversely of the camera in a guideway 63. As shown, the guideway is formed on a carriage which is movable up and down on vertical guide rods 66 secured at their upper ends in anchorage bosses 61 on the housing component 29, and at their lower ends in bosses 68 on the bridge piece 46. The slide 62 (Figs. VIlI and 1X) is formed at one end with a square loop 69 to cooperate with a rotary cam 18 which is secured to a. sleeve 1| splined on a vertical shaft 12, and held against displacement between vertically spaced bearings 13 on the carriage 65, the throw of the cam being such as to cause shifting of the drive disk 54 a distance corresponding to the circumferential spacing of the holes 55 in said disk. The shaft 12 is journaled at its upper end in a bearing 14 on the frame 29, and adjacent its lower end in a bearing 15 on the bridge piece 46. Fast on the sleeve 1| is another rotary cam 16 which cooperates with the forked end 4'Il of a le'ver 18 fulcrumed at 19 on the carriage 85. 'I'he opposite flexible end .88 of the lever 18 is clevised to engage a circumferentially grooved head 8| on the picker pin 58. Thus, as the shaft 12 rotates, rocking movement is imparted to the lever 18 whereby the picker stud 51 is withdrawn and held from engagement with the drive disk 54 during the reciprocating movements imparted to the slide 62 by the cam 18.

The carriage 65 is intermittently shifted vertically onthe guide rods 66 concurrently with the rotative shifts of the drive disk'54, so that the picker is bodily moved radially of the shaft 44 to follow the spiral line of holes 55 in said disk. 'Ihe means by which this is accomplished includes avertical screw spindle 82 which engages an internally threaded boss 83 centrally of the bottom of a yoke member 84 pivotally suspended from pendant lugs 85 of the carriage 66. Intermittent rotary motion is imparted to the screw spindle 82 through the medium of a miter gear 86 in mesh with a companion miter gear 81 on the shaft 44 of the drive disk. A guard 88 (Figs. III and IV) secured to the back of the camera. housing component 29 by screws 89, has an arcuatevilange which laps the edge of the'drive disk 54 and thereby prevents the latter from whipping incident to rapid actuation of the camera mechanism.

Referring to Figs. 1I, IV and V, Vthe lens holder I6 comprises a of superimposed plate members 9| and 92 which are secured by screws 93 to a lens carriage at the front of the camera, said carriage being provided at one end with an elongate boss 98 for guidance on a vertical rod 91 anchored at its upper and lower ends iii bosses 99 and 99 on the door component 3| of the camera. Aillxed to the opposite end of the carriage is a plate |88 with vertically spaced projecting bearing arms |8| which engage the shaft 32 so as to be guided thereby. At the back, the carriage 95 is formed with a boss |82 that receives a rearward projection |83 of the lens `holder plate 92, the end of said projection bearing directly against the illm disk D when the door component 3| of the camera is closed as shown and keeping it pressed lightly but firmly against .the felt facing 42 on the frame 29 of the camera. The projection |83 70 of the lens holder plate member 92 is hollow and provides the lens aperture 56. At the inner side, the lens h'older plate member 9| is recessed so that there is formed jointly with the lens holder s tongue forms' part of a slide |01 which is confined to horizontal reciprocation by guide plates |08 on the carriage 95. Reciprocatory motion is imparted to the slide |01, by means of a rotary cam |09 on a sleeve ||0 having a sliding'spline connection with shaft 32 and held in place between the bearings |0|, said cam cooperating with a rounded projection on a boss ||2 of the slide. A spring H3 in compression between the boss ||2 of said slide |01 and a cross piece ||4 secured to the carriage 95, serves to maintain the rounded projection ||0 yieldingly in contact with the cam |09. The carriage 95 receives its up and down vmovements from the picker carriage 65 at the back of the camera throgh end connections including screw studs ||5and H6, which are adjustable respectively in the rearwardly reaching arms ||1 and |.|8 of said lens carriage, and which engage the tops and bottoms of outwardly reaching arms ||9 and |20 on said picker carriage 65, see Figs. I, 1I, III and V. By adjusting the screws I5 and H6, it is possible to accurately align the picker stud 51 with the aperture 56 of the lens holder I6, the adjustment being flxable by jamb nuts |2| and |22 respectively associated with said screws. The construction just described permits of the outward swinging of the door component 3| of the camera when inserting and removing the film disks incident to which the screws ||5 and ||6 merely ride off the arms ||9 and |20 ofrthe picker carriage 65 in a'manner obvious from Figs. III and V.

As shown in Figs. 1I, IV and V, a plate |25 secured by screws |26, covers a recess |21 of triangular conilguration in the wall 3|a of the door component 3| of the camera. yPivoted to swing on the stud |28 at the bottom ,of this recess |21 are overlapping sectors |29 and |30 of blackened sheet metal or the like, formed adjacent their upper ends with oppositely inclined cam slots |3| and |32 to engage the rearward boss |02 on the lens holder plate member 92. Thus, as the carriage 95 moves up or down, the sectors |29, |30

are caused to overlap to various extents and so prevent entry of light through a vertical slot |33 in the cover plate |25 into which the rearward boss |02 on the lens holder plate member 92 projects. At an intermediate point, the sectors |29 and |30 are respectively provided with coinciding slots |34 and |35 which are curved concentrically with the pivot stud |28 to clear the forwardly-projecting rounded end of the shaft 44, which latter engages an aperture |36 provided for its reception in the cover plate |25.

Reaching forwardly from the center of the lens carriage 95 at the top, is a bracket .plate |31; andreaching forwardly from the bottom of said carriage, is a pair of coextensive, laterally-spaced, symmetrically-disposed angle bar brackets |38 and |39 which plate and brackets jointly support the guide I4 for the ribbon film F at the proper focal distance from the lens (not illustrated) in the lens holder i6 of the camera 4. To facilitate threading of the ribbon film F, the frontal component |40 of the guide |4 is hinged at one side edge on a stud screw |4| on the 'b'racket |38 so that it may be swung outward away from the fixed component |42of said guide;

and'at its other side edge, said frontal compoi y nent |40 is formed with a spring clip |43 adapted to releasably engage a screw stud |44 `on the bracket |39 as shown in Figs. IV and V. The

ribbon lm F passes into the interval between the two components |40, |42 of the guide from above over a roller |45 whereof the trunnions are free to rotate in bearings |46 on the guide component |40. In leaving the guide I4, the ribbon nlm F passes betweenarroller |41 whereof theV trunnions are freely rotatable ln a pendant bearing |48 on the frontal component |40 of the guide, and a toothed drive roller |49 forming a part-of the feed means i3. 'Ihe shaft I 50 of the roller |49 is journaled in the bracket |39, and at its outer end has secured to it the star wheel |5| of a Geneva motion whereof the actuating disk |52 is secured to anothershaft |53 also journaled in said bracket. The film F is directed between the. rollers |41'and I 49 of the feed means |3 over a pad |54 of felt or the like covering the rounded edge |55 of a recess |58 at the front of the table see Figs. I, II and VII.

The carriages 85 and 95 and their appendages are counterbalanced by a pair of weights |51 'respectively attached to cordsL |58 which run ovei` idler sheaves |59`supported for free rotation by arms reaching outward from the top of the door component 3| of the camera, and which are securedl to eyes `|6| at the ends of a laterallyextending bar |62 on the bracket plate |31, see Figs. LII, IV and V. As a result ofthe provisions just described, the up and down movements of the carriages 65 and 95 are eased with prevention of binding of said carriages with their vertical guides.

The feed means hereinbefore mentioned in- :cludes a. roller |63 with teeth to engage the marginal apertures in the ribbon film F, said roller being secured to a shaft |64 withjournal support in bearing brackets |65 and |66 at the topA of the housing component 29 of the camera. On its way from the reel 1, the ribbon film F is directed to the roller |63 by an associated guide roller |61 on another shaft |68 alsohaving journal support in the bearing brackets |65 and |66, the shafts |64 and |68 being coordinated by intermeshing spur gears |69 and |10, see Figs. II,`

III and IV. An idler roller |1| atthe end of an arm |12' swingable on the pivot stud |13 on the bracket |65 and subject toa leaf 'spring |14, serves to yieldingly hold thev ribbon film F against the toothed roller |63.

The feed means i2 (Figs. Il, II and VII) is generally similar to the feed means JIl in that it includes a toothed roller |15 to engage the marginal apertures of the film, the shaft |16 of said roller being journaled in a bearing bracket |11 beneath the table l. A roer |18 freely rotatable at the end of an arm |19 pivoted on the bracket 8 and subject to a spring |80, serves to 'maintain the ribbon lm F in contact with the toothed roller |15.

The drive mechanism of the apparatus comprises an electric motor |8| (Fig. VII) which is suspended from the underside of the table |-and whereof the shaft |82 is directly coupled with the input shaft |83 of a suitable speed reduction unit |84. A pulley |85 on the delivery shaft |86 of the speed reductign unit |84 is coordinated by a belt |81 extending up through an opening |88 in the table I, with another pulley |89 (Figs. I, 111 and V) on a shorthorizontal shaft |90 which is journaled in a corner bracket |9| attached by screws |92 to the frame 29 vof the camera. A miter gear, |93 on the shaft |90 serves, by coaction with another miter gear |94 at the bottom end of the shaft12; to constantly rotate the latter shaft. 'A miter gear |95 at the 7 5.

upper end of the shaft 12 meshes with a companion miter gear |96 on the contiguous end of a horizontal shaft |01 journaled in spaced bearing lugs I 98 of the bracket |55 'at the top of the housing component 29 of the camera 4. At its outer end, the horizontal .shaft |91 carries a miter gear 200, which, through an intermeshing miter gear 20|, transmits motion to the shaft 32. Also meshing with the miter gear |05 at the top of the shaft 12, is a miter gear 242 on the shaft |58 of the roller |51 embodied in the feed means for the ribbon film F. Secured to the bottom end of the cam sleeve ||0 on the shaft 32 is a miter gear 203 which meshes with av miter gear 204 on a short horizontal shaft 205 journaled in pendant bearings 205 of a bracket 201 on the lens carriage $5 (Fig. II) at one end thereof. Secured to the shaft 205 in the interval between the bearings 205 is a spur gear pinion 208 which meshes with an idler spur gear wheel 209 free on a screw stud 2|! which projects laterally from a bracket arm |30 on the carriage 95. The wheel 209, in turn, meshes with another spur gear pinion 2| on the shaft |53 for the driving element |52 of the Geneva movement by which the feed means I3 is intermittently operated. From Figs. I, l1 and VII it will be noted that the shaft 32 extends down through a bearing 2|2 on the table and that to its bottom end is secured a miter gear wheel 2|3 which meshes with a miter gear wheel 2|4 on a transverse horizontal shaft 2|5 with journal support in spaced bearings 2 I6 pendant from said table. Another miter gear l2|1 on the shaft 2|5 meshes with a miter gear 2|8 on longitudinally-extending horizontal counter shaft 2|! likewise journaled in spaced bearings 220 pendant from the table I. A miter pinion 22| on the countershaft 2|! intermediate the bearings 220, drives an inter-meshing miter pinion 222 on a shaft 223 journaled in the bracket |11, and from the latter shaft continuous movement is transmitted to the roller shaft |16 of the feed means I2 by a pair of intermeshing spur gears 225 and 225. The take-up reel I0 for the ribbon film is rotated in the direction of the arrow in Fig. Iv by a crossed slip belt 221 which connects a pulley 228 on the spindle l of said reel with a smaller pulley 220 on the transverse horizontal shaft 2|5. A relatively heavy ily wheel 230 (Figs. I and VII)- on the main shaft |03 of the speed reduction unit |34 functions as a means to render the action of drive mechanism of the apparatus smooth and vibrationlesa The ratios of the various gears embodied in the -drive mechanism and the timing of the cams embodied in the mechanism of the camera 4 are such that the ribbon film P and the negative film disk D are intermittently shifted. and that the lens shutter |05 is retracted to open the lens aperture during the dwell periods between the concurrent shifts of said film and disk.

The operation of the apparatus is as follows: Under the drive of the electric motor III, the vertical shaft 32 is constantly rotated by the interposed driving connections hereinbefore described, with resultant actuation of the Geneva movement |5I, |52 and presentationpof the pictures of the ribbonvfllm F successively at the aperture l5 of the guide |4, the ribbon being fed at a definite constant rate by the feed devices Il and |2 with maintenance of ample working slack in it above and below said guide. concurrently with intermittent progression of thezribbon'F as j ust explained, the negative film disk D is circumferentially shifted so that small areas of its 2,179,617 surface corresponding in size to the lens aperture 55, are successively presented to said aperture when the lens shutter |05 is closed and obstructing said aperture. This shifting of the film disk D is accomplished by coaction of the picker'stud 51 with the spirally arranged holes in the drive disk 54. During contemporaneous dwells of thev ribbon film F and the film disk D, the lens shutter |05 is retracted from the-lens aperture so that the image at that time in registry with the aperture I5 of the guide i4, is projected by the lens of the camera upon the exposed area of said film disk. By reason of the vertical travel of the picker and lens carriages and 95 by the screw spindle 32, the picker stud 51 and the camera lens are caused to follow the spiral line of holes 5 5 in the drive disk 54, sd that the transferred pictures arrange themselves -correspondingly on the film disk D. The apparatus may be driven so that the reproduction on the nlm disk D starts either at a point near the center of said disk or at a point near the periphery thereof. In the present instance, rotation of the film disk D is as indicated by the arrow in Fig. VI, with the pictures starting near the center and ending at the periphery. Photographing proceeds automati- .callyruntil an elongate idling notch 55a in the edge of the drive disk 54 arrives at the picker stud 51, whereupon the movement of said disk ceases. negative film disk D removed from the camera 4.

To re-set the apparatus for another reproduction, the pulley |89 is slightly turned by means of a finger knob 2M thereon for placement of the picker stud 51 in neutral position, i. e., out

of contact with the drive disk 54. With this ac' omplished, the shaft v44 of the drive disk 54 can be reversely turned, for which purpose a hand crank 232 is provided on. said shaft. By reverse turning of the shaft 44, the screw spindle 02 is rotated oppositely to lower the carriages 65 and 68 until the picker stud 51 registers with an elongate terminal idling aperture 55h at theinner end of the series of holes 55 in said drive disk. Finally, the ribbon lm F is rewound and the reels 1 and I0 replaced in their original positions, or another ribbon lm substituted; a new nega- Ative disk inserted intothe camera 4; the motor III started; and the handle 232 on the shaft 34 given a slight tap to bring the rst circular hole 55 adjacent the aperture 55h in the drive disk 54 into'the path of the picker stud 51, whereupon the operation of the apparatus again proceeds automatically as before.

By virtue of the dinerence in the diameters of the studs 5l and 5|. on the mounting plate 43, exact placement of the film disks in the camera is obviously insured. Such being the case, it is possible toproduce, with absolute fidelity, as many duplicate disk negatives as may be desired from a ribbon lm F.

Having thus described my invention, I claim:

1. A photographic reproduction apparatus comprising a carriage; an apertured guide for ribbon nlm and a camera lens supported in' alignment on the carriage; means for intermittently progressing the ribbon film for presentation of its pictures successively at the aperture of the guide; a mounting in the camera for a negative film disk, said mounting having perforations spaced along'a spiral line; a reciprocating picker on the carriage for successively engaging the perforations to intermittently rotate the disk mounting; a shaft with means for actuating the picker;

The motor |8| is then stopped, and theA 'loJ means for progressively shifting the carriage ra- 7K5 dially oi the disk mounting so that the pictures of the ribbon tllm are photographed on the lm disk along a spiral line corresponding to that of the apertures in said disk mounting; and interposed drive connections whereby the ribbon illm progressing means and the carriage shifting means are concurrently operated from the picker actuating shaft.

2. A photographic reproduction apparatus comprising a carriage; anvapertured guide for ribbon film and a camera lens supported in alignment on the carriage; means for intermittently progressing the ribbon lm for presentation of its pictures successively at the aperture of the guide; a mounting in the camera for a negative illm disk, said mounting having apertures spaced along a spiral line; a reciprocating picker on the carriage for successively engaging the aperture to intermittently rotate the disk mounting; a shaft with means for actuating the picker; means deriving motion from the disk axis for progressively shifting the carriage radially of the disk so that the pictures of the ribbon film are photographed on the illm disk along a spiral line corresponding to that oi the apertures; and interposed drive connections whereby the ribbon nlm progressins means and the carriage shifting means are concurrently operated from the actuating shaft aforesaid 3. A photographic reproduction apparatus according to claim 2,y including means whereby, after the photographing of a predetermined number ,of pictures, the picker is automatically renderefinoperative with attendant cessation in the'shifting of the carriage.

4. Photographic reproduction apparatus comprising a carriage; an apertured guidevfor a ribbon lm, and a camera lens .supported in alignment on the carriage; means for intermittently progressing the ribbon illm for presentation of its picturessuccessively at the aperture of the guide; a mounting in the camera for a negative illm disk; means including an actuating shaft for intermittently rotating the disk mounting; means coordinated with the axis oi the disk mounting for shifting the carriage radially of the disk so that the pictures of the ribbon nlm arel photographed along aspiral line on the negative nlm disk; interposed drive connections whereby the ribbon tllm progressing means and the carriage shifting means are concurrently' operated from the aforesaid actuating shait; and means whereby, after the photographing of a predetermined number of pictures, the means for rotating the disk mounting is automatically rendered inoperative with attendant cessation-in the shitting of the carriage.

JAMES J. DILKS, Jl. 

